Inventor · disambiguated record
John D. Douma
Also filed as: DOUMA JOHN D · DOUMA JOHN DAVID
3 granted patents·49 citations·filing 1984–2007
68Inventor score
Top patents by PatentIndex Score
3 records- 0181US4608895ARotary die cuttingBERNAL ROTARY SYSTEMS INC·Filed 1984·Granted Sep 2, 1986·43 cites·32 claims
- 0262US7458291B2Self-sealing yoke assembly for a steering apparatusFORD MOTOR CO·Filed 2007·Granted Dec 2, 2008·4 cites·13 claims
- 0348US7631571B2Yoke assembly for a power steering apparatusFORD GLOBAL TECH LLC·Filed 2006·Granted Dec 15, 2009·2 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →